Institute Newton C. Braga

Circuit Bench

Phase Shift Oscillator (CB4373E)
This circuit was found in an English magazine from 1973. The magazine no longer exists, but the...
High power LED flasher (CB20944E)
Found in American documentation from the 1980s, this circuit shows how to use an LM3909 pulsator in a...
5 W Amplifier with Muting TDA 1905 (CB15221E)
The integrated circuit used in this amplifier is not common today. The power can be between 4 and...